CXLB73199 adopts an advanced synchronous buck boost architecture, which only requires one inductor to achieve efficient bidirectional energy flow, significantly reducing the number of peripheral components, effectively reducing PCB area, and lowering system BOM costs. This chip supports a wide range of battery configurations, and users can flexibly set the number of battery cells, battery type (ordinary lithium battery or lithium iron phosphate), and full charge voltage through external resistors, providing extremely high design flexibility.
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[ CXLB73199 ]"
CXLB73199: High performance 100W multi protocol buck boost lithium battery charge and discharge management chip
With the rapid development of smart devices, power tools, portable energy storage and other products, higher requirements have been put forward for the efficiency, safety and integration of battery charging and discharging management. CXLB73199, as a highly integrated synchronous buck boost lithium battery charge and discharge management chip, integrates multiple mainstream fast charging protocols such as AFC, FCP, PD2.0/PD3.0, etc. It supports charge and discharge management of 2 to 6 lithium batteries or lithium iron phosphate batteries, with a maximum power of up to 100W, suitable for various high-power density and high safety standard electronic product designs.
Product Overview
CXLB73199 adopts an advanced synchronous buck boost architecture, which only requires one inductor to achieve efficient bidirectional energy flow, significantly reducing the number of peripheral components, effectively reducing PCB area, and lowering system BOM costs. This chip supports a wide range of battery configurations, and users can flexibly set the number of battery cells, battery type (ordinary lithium battery or lithium iron phosphate), and full charge voltage through external resistors, providing extremely high design flexibility.
In terms of charging management, CXLB73199 supports a three-stage charging process of trickle current, constant current, and constant voltage, and can intelligently adjust the charging current according to the load capacity of the input power supply, effectively improving charging efficiency and ensuring system safety. Its built-in 14 bit high-precision ADC and power meter can monitor the battery status in real time and use I² The C interface outputs key parameters such as battery level, voltage, and current, providing users with accurate battery display and system control capabilities.
Core Features
Charge and discharge management
• Supports 2/3/4/5/6 series lithium batteries or lithium iron phosphate batteries
• Maximum 100W charging and discharging power, external resistor can set power upper limit
• Charging voltage can be set: lithium battery 4.15V– 4.4V， Lithium iron phosphate 3.5V– 3.7V
• Equipped with a three-stage charging mode of trickle current, constant current, and constant voltage
• Support input power adaptive adjustment, compatible with multiple chargers
Fast charging protocol integration
• Both input and output support protocols such as PD3.0/PD2.0, QC2.0/3.0/3.0+, FCP, AFC, SCP, etc
• Supports Type-C DRP Try. SRC mode, which can prioritize supplying power to the other party's device
• Automatically identify device type and match optimal output voltage and current
Intelligent display and communication
• Built in battery meter, supports initial capacity setting (2000– 25000mAh)
• Support 4/2/1 LED power indicator light, customizable 188 digital display tube
• Provide I² C communication interface, convenient for system status reading and control
Comprehensive protection mechanism
• Input overvoltage/undervoltage, output overcurrent/short circuit protection
• Battery overcharge/overdischarge/overcurrent, IC over temperature protection
• NTC battery temperature detection, supporting high and low temperature charging and discharging protection
• ESD withstand 4KV, critical pin withstand 30V
Typical application scenarios
CXLB73199 is widely used in various scenarios that require efficient and high-power charge and discharge management, including but not limited to:
• Large capacity mobile power banks and portable energy storage devices
• Electric tools, garden machinery battery packs
• Intelligent devices with multiple lithium batteries and IoT terminals
• Fast charging devices and adapters with Type-C interface
Design flexibility and customization support
In addition to the standard model CXLB73199, JTM-IC also offers multiple customized models to meet different customer needs:
• CXLB73199_COUTAdd C-port discharge output function on the basis of standard products
• CXLB73199_12C_COUTSupports I2C slave function, suitable for complex systems that require host communication
In addition, the chip supports setting battery capacity, charging power, battery type, and series connection number through external resistors, and has a comprehensive fault alarm mechanism to ensure safe and reliable operation of the system in various abnormal situations.
Packaging and technical support
CXLB73199 adopts a compact 7mm× 7mm QFN48 package, with good heat dissipation performance and welding reliability. JTM-IC provides customers with complete technical documentation, reference design schematics, and BOM lists to help them quickly achieve productization.
For more product information, sample requests, or technical support about CXLB73199, please visit our official website;jtm-ic.comOr contact our sales and technical team.
article authorJTM-IC Technical Team
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